Process for catalytic oxidative removal of at least one oxidisable gaseous compound from a gas mixture comprising the at least one oxidisable gaseous compound as well as oxygen through the use of an oxidation catalyst, whereby the gas mixture is not a combustion flue gas, characterised in that the oxidation catalyst was produced through the use of at least one exothermic-decomposing platinum precursor.

The application relates according to one embodiment to an air filter for grease filtering. The filter includes a filter mounting element for installing the filter in connection with an intake opening of an air ventilation duct, at least one mechanical separation element for separating solid impurities from flowing air, and a UV source mounting element capable of being fitted with a UV source for generating UV light. The UV light and a catalyst coating present inside the filter are adapted to transform the physical state of grease flowing into the ventilation duct along with the airflow.

A method of fabricating composite filaments is provided. An initial composite filament including a core and a cladding (such as a Pt-group metal) is cut into smaller pieces (or is first mechanically reduced and then cut into smaller pieces). The smaller pieces of the filaments are inserted into a metal matrix, and the entire structure is then further reduced mechanically in a series of reduction steps. The process can be repeated until the desired cross sectional dimension of the filaments is achieved. The matrix can then be chemically removed to isolate the final composite filaments with the cladding thickness down to the nanometer range. The process allows the organization and integration of filaments of different sizes, compositions, and functionalities into arrays suitable for various applications. Materials and components made from such composite filaments and arrays of composite filaments are also disclosed.

Disclosed is a device for decreasing a concentration of hydrogen exhausted from a fuel cell through an exhaust line. The device includes: a first housing connected to the exhaust line and having an exhaust gas moving path and an air inlet formed therein; a pumping part installed in the first housing and sucking air through the air inlet; a second housing coupled to the first housing and having an air diluting part and a diluted gas moving path formed therein, the air diluting part being connected to the exhaust gas moving path and the diluted gas moving path being connected to the air diluting part; and a nozzle member spraying the air introduced into the air inlet to the air diluting part while being rotated

The method of simultaneous removal of NO and carbonic particles and inorganic dust from flue gases in the reactor equipped with the catalyst for direct decomposition of nitric oxide located on a metallic monolith consists in tangential introduction of flue gases to the reactor circumfer-ence generating rotational flow of the flue gases downwards of the reactor with simultaneous flow disturbance due to flue gases contact with undulating surface of metallic foil located on an inner wall of the reactor chamber and split of the flue gases by contact with the catalyst located on a spiral band falling to the lower part of the reactor, and next flue gases jet direction counter-currently to a cylindrical inner chamber containing the slices of the monolithic catalyst disturbing laminar flow of the flue gases jet. The deposited solid particles of the pollutants are collected in the lower part of the re-actor. The invention concerns also the reactor designed for simultaneous removal of NO and carbon particles and inorganic dust from flue gases.

A honeycomb structure of the present invention includes a honeycomb structure body and a pair of electrode member arranged at a side surface of the honeycomb structure body. The honeycomb structure body has an electrical resistivity of 1 to 200 cm, and the respective pair of electrode members is formed into a band-like shape extending in a direction in which the cells extend. In a cross section perpendicular to the cell extending direction, one of the electrode members is arranged opposite to another of the electrode members sandwiching a center of the honeycomb structure body. One or more of slits, which being open to a side surface, are formed at the honeycomb structure body. At least the one slit is formed so as not to intersect with a straight line connecting center portions of the respective pair of electrode members in the cross section perpendicular to the cell extending direction.

Methods and apparatus for cross flow process reactors are disclosed. A disclosed example includes a process chamber having an inlet and an outlet to allow a flow of fluid to flow therethrough and a plurality of trays disposed within the process chamber, and containing bulk material to treat the fluid. The example apparatus also includes a flow director to divide the flow into a plurality of partial flow streams, where each partial flow stream is to be directed towards at least one tray of the plurality of trays.

An electrically heatable honeycomb body assembly includes an electrical connection of sheet metal layers at a connection pin. A honeycomb body has a metal casing with an inner periphery, through which the connection pin is led in a bushing and electrically insulated. The sheet metal layers are alternately coarsely structured and finely structured or smooth sheets together forming a stack with uppermost and lowermost layers and channels for an axial gas flow between the layers. The connection pin runs radially approximately perpendicular to the layers and is metallically connected to at least two or all of the layers through at least one intermediate piece. The uppermost sheet metal layer preferably runs approximately parallel to the metal casing over at least 35% of the inner periphery and is separated therefrom only by an air gap. Simple production of an operationally safe and very uniformly electrically heatable honeycomb body is provided.

An air purifier. A dry filter section includes a filter member, a dust sensor, and a UV lamp to primarily collect ultrafine dust particles. A suction pump is disposed to forcibly supply the intaken air with the dust particles removed. First and second wet purification sections are filled with water to secondarily purify the intaken air and purified air. A control section controls the operation of the suction pump and respective valves connecting the dry filter section, and the first and second wet purification sections. First and second bubble removers are rotatably provided in the first and second wet purification sections, respectively, to remove air-bubbles injected into the first and second wet purification sections, under the control of the control section.

A waste gas treatment equipment includes a reactor defining a waste gas reaction space, an induction heating pipe disposed in and dividing the waste gas reaction space into inner and outer spaces, a coil protector disposed in the outer space and surrounding the induction heating pipe, a flow guide tube inserted into the inner space through a bottom wall of the reactor, and a high frequency coil disposed in the coil protector. A catalyst barrel has a barrel body sleeved on a top portion of the flow guide tube, including an outer wall provided with a plurality of through holes, and defining a receiving space communicating with the through holes and for receiving a catalyst. A scraper mechanism is provided in the reactor for scraping dust or crystals attached to the inner wall surface of the flow guide tube and the outer wall of the barrel body.